Add-On Features

For details on what each feature does, check out the link in the Add-On Features section below. Please note if you want to add or remove add-on features after your initial purchase, we will charge a $20 re-tune fee.

SMG Final Drive Swap

CSL Warm Up Lights

155 MPH Limiter Removal

EWS Delete + EWS Tampering DTC Delete

Valet Mode

Sport Enhanced Mode

Memory Sport Mode

Dyno Mode

Uploads for E-Flash Method

Upload your stock tune bin file (zipped) for the E-Flash method. If you require assistance, we can help you after order is placed.

Stock BIN file (compress to zip file) (max file size 80 MB)

Terms of Service

Buildjournal Tuning Labs products are for off-road use only. Improving the performance of an engine by altering the engine’s computer software may cause excessive “wear and tear” to the engine and could result in damage or even destruction of the vehicle. The user assumes these risks. Buildjournal is not responsible for damage to a vehicle of this kind. Please read our Terms of Service for more information.

Description

This is a must-update for all E46 M3 SMG owners who don’t want the engine performance benefits from our B-Spec Tune, but want the SMG transmission tune. You may have experienced sluggish shifting or odd gearbox behavior with your SMG transmission. With the Buildjournal E46 M3 SMG Transmission Tune Software you can gain all the benefits similar to an E46 M3 CSL gearbox which enables CSL SMG Shifting, Downshift Rev Matching, and SMG Inertia Update.

ADD-ON FEATURES

For a full description of each E46 M3 SMG Transmission Tune Software add-on feature and what it does, check out ECUWorx’s website. In addition, we have two exclusive throttle remapping features that are not on the list:

Valet Mode – Overrides your ‘Comfort’ Mode (Sport mode off) to limit peak power and acceleration. Ideal use case is to drive normally with the ‘Sport’ button on and turn it off for Valet Mode situations.

Our E46 M3 SMG Transmission Tune Software is done via E-Flash. This is a 3-step process that is done via online file transfer from anywhere in the world. You send us your bin file. We create the tune. You flash. This method requires an FTDI based OBD2 diagnostic cable and a laptop. See our store page for a referral link to buy a BMW K+DCAN OBD2 cable. Detailed E-Flash instructions below.